Check out a free preview of the full Scalable Modular Architecture for CSS (SMACSS) course:
The "Theme Names" Lesson is part of the full, Scalable Modular Architecture for CSS (SMACSS) course featured in this preview video. Here's what you'd learn in this lesson:

Theme names use the prefix “theme-“. This allows developers to use the theme classnames throughout the HTML and easily switch out the theme on-the-fly.

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